EPA Method 8141/1657 Surrogate Standard Back Catalog number: 92357 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended S-4966-100-ME Antidepressant Mix 02, 100μg/ml in MeOH, 1ml Price on request 677167 Tetra-n-butyltin, 1000 µg/ml, Methanol, 5ml Price on request 70776 Oxydemeton methyl, 1000µg/ml in MeOH, 1ml Price on request